I assume that you're trying to generate a unit vector
If so.....let u = < a, b >
The unit vector is given by :
< a / √[a^2 + b^2] , b / √{ a^2 + b^2 ] >
how do i plug in the unit vector?
Each unit vector has the length 1
\(\text{2D unit vector } \vec{v}_0 = \frac{\vec{v}}{v} \qquad \text{ with } \qquad \vec{v} = \binom {v_x}{v_y} \qquad \text{ and} \qquad v = \sqrt{v_x^2+v_y^2} \)
\(\text{3D unit vector } \vec{v}_0 = \frac{\vec{v}}{v} \qquad \text{ with } \qquad \vec{v} = \begin{pmatrix} v_x \\ v_y \\ v_z \end{pmatrix} \qquad \text{ and} \qquad v = \sqrt{v_x^2+v_y^2+v_z^2} \)